Line Powering
The Single Channel T1 card can be line powered via 60mA simplex current on the T1 line. When an HDSL or T1
NIU is placed at the CO side of the Fiber Link it must provide span-through line power to the T1 fiber interface
card. When line power is available, no external or local power is required to operate the fiber card. An active T1
line with 60mA line power connected to the fiber interface card should typically measure 22-30VDC between
transmit and receive pairs. If voltage is not present verify the NIU model number using the
NIU Compatibility
Chart
listed in this document, or contact RLH to ensure span-through power compatibility.
Installing card housing
Mount housing in equipment rack or attach to backboard.
Mount the desired card housing in an equipment rack, or to a wall or backboard using the mounting brackets
provided.
When installing an RLH card housing, leave room for the door to open and provide enough slack in wiring and
fiber to allow for card access.
Note card orientation in housing during installation
Handle card by edges. Install in slot 1 or next available card slot. For ease of installation, install the card into
housing before connecting fiber or copper wiring.
"
Installing into Card Housing
RLH Industries, Inc. • Tel. 866-DO-FIBER • Fax 714 532-1885 • www.fiberopticlink.com
Page
"
6
